Archtiamat

"The true form of the tiamat, one of Chaos's lieutenants."

- In-game description

The Archtiamat is a boss-sized fiend in Mobius Final Fantasy -- one of the four Arch-fiends and lieutenants of Chaos in Act 1, working as a larger and more powerful version of Tiamat.

The Archtiamat is naturally and.

At the beginning of battle, the Archtiamat casts Aegis of Discord to weaken you and apply a strong defensive barrier. This can be removed by breaking it, which will also restore its Wind affinity. It also casts Tri-Barrier, which gives it some elemental protection from three of the elements. These can be broken down by casting spells of the opposite element at it, or waiting out the 4 turns until they expire.

Its attacks seem fairly simple, but they hit extremely hard... and repeatedly. Coupled with the Tri-Barrier protections, it's a formidable enemy and rightfully the strongest of Chaos' lieutenants.

In more difficult circumstances (like the Chaos Vortex), when the Archtiamat hits 50% HP, it will cast on itself, giving time to repair its Break Gauge.

The Archtiamat gets 3-4 actions per turn.

Encounters
 can appear as an enemy in the following: